Hong Kong  is one of two special administrative regions  of the People's Republic of China, the other being Macau. Situated on China's south coast and enclosed by the Pearl River Delta and South China Sea. The Hong Kong  is renowned for its expansive skyline and deep natural harbour. Hong Kong has an land area of about of 1,104 km square kilometers and a population of seven million people.  Hong Kong is one of the most densely populated areas in the world. Under the principle of "one country, two systems", Hong Kong has a different political system from mainland China. As one of the world's leading international financial centres, , Hong Kong dollar, is the ninth most traded currency in the world. Hong Kong has denser constructions, which developed the city to a centre for modern architecture and the world's most vertical city. Surgeons and Gynaecologists of Hong Kong are known all over World because this country is extraordinary in minimal access surgery technology.